- Pollen and anther ontogeny in Cabomba caroliniana (Cabombaceae,Nymphaeales)
[作者:Taylor, ML; Gutman, BL; Melrose, NA; Ingraham, AM; Schwartz, JA; Osborn, JM,期刊:American Journal of Botany, 页码:399-413 , 文章类型: Article,,卷期:2008年95-4]
- Cabomba is a small water lily genus that is native to the New World. Studies of pollen development and associated changes in the anther yield valuable characters for considering the evolution of reproductive biology in s...
- Genetic effects on the biomass partitioning and growth of Pisum and Lycopersicon
[作者:Niklas, KJ; DeMason, DA; Cobb, ED,期刊:American Journal of Botany, 页码:424-433 , 文章类型: Article,,卷期:2008年95-4]
- We examined a series of eight pea genotypes differing in three naturally occurring allelic mutations, i.e., af (afila), st (stipules reduced), and tl (tendril-less) and three species, five cultivars, and one interspecifi...
- Influence of nutrient availability on the mechanisms of tolerance to herbivory in an annual grass, Avena barbata (Poaceae)
[作者:Suwa, T; Maherali, H,期刊:American Journal of Botany, 页码:434-440 , 文章类型: Article,,卷期:2008年95-4]
- Tolerance, or the capacity of a genotype to survive and reproduce following herbivore damage, varies widely across the plant kingdom. One proximate cause of this variation is resource availability, which can influence to...
- Molecular phylogeny and reticulate origins of the polyploid Bromus species from section Genea (Poaceae)
[作者:Fortune, PM; Pourtau, N; Viron, N; Ainouche, ML,期刊:American Journal of Botany, 页码:454-464 , 文章类型: Article,,卷期:2008年95-4]
- The origin of polyploid Bromus species of section Genea was investigated using molecular data. This group of annual species native from the Old-World is composed of three diploids, two tetraploids, one hexaploid, and one...
- Seed ferns survived the end-cretaceous mass extinction in Tasmania
[作者:McLoughlin, S; Carpenter, RJ; Jordan, GJ; Hill, RS,期刊:American Journal of Botany, 页码:465-471 , 文章类型: Article,,卷期:2008年95-4]
- Seed ferns, dominant elements of the vegetation in many parts of the world from the Triassic to Cretaceous, were considered to have disappeared at the end of the Cretaceous together with several other groups that had occ...
- Scent variation and hybridization cause the displacement of a sexually deceptive orchid species
[作者:Stoekl, J; Schlueter, PM; Stuessy, TF; Paulus, HF; Assum, G; Ayasse, M,期刊:American Journal of Botany, 页码:472-481 , 文章类型: Article,,卷期:2008年95-4]
- In the sexually deceptive orchid genus Ophrys, reproductive isolation is based on the specific attraction of mates of a single pollinator species, mostly bees, by mimicking the female sex pheromone of this species. Chang...
- Adaptive significance of self-fertilization in a hermaphroditic perennial, Trillium camschatcense (Melanthiaceae)
[作者:Kubota, S; Kameyama, Y; Hirao, AS; Ohara, M,期刊:American Journal of Botany, 页码:482-489 , 文章类型: Article,,卷期:2008年95-4]
- The evolution of self-fertilization from primarily outcrossing ancestors is one of the most common evolutionary transitions in plants, however, the ecological mechanisms that maintain self-fertilization have remained con...
- Relationships and evolution of matK in a group of leafless orchids (Corallorhiza and Corallorhizinae; Orchidaceae : Epidendroideae)
[作者:Freudensteinia, JV; Senyo, DM,期刊:American Journal of Botany, 页码:498-505 , 文章类型: Article,,卷期:2008年95-4]
- Corallorhizinae are a small group of Old and New World temperate orchids of which a core monophyletic group comprises Govenia, Cremastra, Aplectrum, Oreorchis and the leafless Corallorhiza, and which according to phyloge...
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